<template>
	<view>
		<!-- 搜索组件 -->
		<my-search @click="gotoSearch"></my-search>
		<!-- 滑动区域 -->
		<view class="huadong">
			<!-- 左侧滑动区域 -->
			<scroll-view class="left_huadong" scroll-y="true" :style="{height: wh + 'px'}">
				<block v-for="(item,i) in cateList" :key='i'>
					<view :class="['left_huadong_item',i === active ? 'active' : '']" @click="activeChanged(i)">{{item.cat_name}}</view>
				</block>
			</scroll-view>
			<!-- 右侧滑动区域 -->
			<scroll-view class="right_huadong" scroll-y="true" :style="{height: wh + 'px'}" :scroll-top="scrollTop">
				<view class="right_huadong" v-for="(item,i2) in cateLevelList" :key='i2'>
					<view class="right_huadong_item">/ {{item.cat_name}} /</view>
					<view class="right_huadong_item_list_lv3">
						<view class="right_huadong_item_lv3" v-for="(item3,i3) in item.children" :key='i3' @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon" mode=""></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	export default {
		mixins: [badgeMix],
		data() {
			return {
				wh: 0,
				cateList: [],
				active: 0,
				cateLevelList: [],
				scrollTop: 0
			};
		},

		onLoad() {
			const sysInfo = uni.getSystemInfoSync()
			console.log(sysInfo)
			this.wh = sysInfo.windowHeight - 50
			this.getCateList()
		},
		methods:{
			async getCateList(){
				const {data: res} = await uni.$http.get('/api/public/v1/categories')
				
				if(res.meta.status !== 200) return uni.$shouMsg()
				
				this.cateList = res.message
				this.cateLevelList = res.message[0].children
			},
			activeChanged(i){
				this.active = i
				this.cateLevelList = this.cateList[i].children
				this.scrollTop = this.scrollTop === 0 ? 1 : 0
			},
			gotoGoodsList(item3){
				uni.navigateTo({
					url: '/subpkg/goods_list/goods_list?cid=' + item3.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
			
		}
	}
</script>

<style lang="scss">
	.huadong {
		display: flex;
	}

	.left_huadong {
		width: 120px;
	}

	.left_huadong_item {
		background-color: #F7F7F7;
		text-align: center;
		line-height: 60px;
		font-size: 12px;
		
		&.active {
			background-color: #007AFF;
			position: relative;
			
			&::before{
				content: '  ';
				display: block;
				width: 3px;
				height: 30px;
				background-color: #4CD964;
				position: absolute;
				top: 50%;
				left: 0;
				transform: translateY(-50%);
			}
		}
	}
	.right_huadong_item{
		text-align: center;
		font-weight: bold;
		font-size: 12px;
		padding: 15px 0;
	}
	.right_huadong_item_list_lv3{
		display: flex;
		flex-wrap: wrap;
	}
	.right_huadong_item_lv3{
		width: 33.3%;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		image{
			width: 60px;
			height: 60px;
		}
		text{
			font-size: 12px;
		}
	}
</style>
